Cast-ikon cab-wheel



ASA WHITNEY, OF PHILADELPHIA, PENNSYLVANIA.

CAST-IRON CAR-WHEEL.

Specication of Letters Patent No. 5,127, dated May 22, 184'?.v

To all whom t may concern.' v

Be it known that I, ASA WHITNEY, of the city of Philadelphia, in the State of Pennsylvania, have made a new and useful Improvement in the Manner of Constructing the Wheels of Railroad Cars or Carriages; and I do hereby declare that the following is a full and exact description thereof.

The design of my improvement is to give.' a greaterv degree of strength, with a less amount Iof material, than has heretofore been given to the wheels used on railroads, which is accomplished by making the disk,

or that part of the wheel between the rimk and hub or nave, corrugated in vradii from the center, so that a vertical section around the center, at any point between the rim and hub, will show a waving or wrinkled line, which maybe either in continuous curves or in straight lines and angles, while a vertical section across the wheel through its center would present a straight line on the disk.

. Figure 1 in the annexed drawings, shows a side view of a wheel shaded tofre'present the corrugations. Fig. 2 is an edge view of the wheel with part of the rim off, to show the shape of the disk, where it connects with the rim, as by the various lines, a, to a, in perspective. This drawing only shows a wheel having a single disk. They may also be made with double disks. These wheels may be made wholly, or in part either of wrought or cast iron, or other metal, or by a combination of them. When the wheel is made wholly of cast iro-n, the hub, disk and rim may be all cast together at the same heat; or the disk may' be cast separately, and when thus cast placed in the mold, and the rim and hub subsequently cast on the disk; or the disk and rim, or the disk and hub, may be cast together at one heat, and those parts laid in the mold, and the re maining part, hub or rim, cast on to them at a subsequent heat. When the wheels are made in parts,'of anymaterial the attach- 'y l ment between the hub rim and disk may be made in any of the known ways of constructing` rail roadl wheels. The advantages y expected .to result from the use of these wheels, corrugated as above described are that they can be made much lighter, with a greater degree of strength, than'v any spoke or disk wheels heretofore used, inasmuch as this manner of corrugating the disk is in fact a continuous spoke around the whole wheel, while at thesametime the waves of the corrugations serve to stiifen the wheel inthe direction of the lateral strain when in use, and also to support therim atevery point in its circumference. l

I do not claimy that the invention above described is an improvement inthe form or construction of any other partr of rail 'fastening or attachingthe hub and rim` to the disk, but

What I do claim as'my invention and desire to secure by Letters Patent, is'- The manner herein set forth, of corrugating the disks of rail kroad wheels, by which they can be made stronger and more durable with a less amount of material than any other form of diskor spoke wheels, as heretofore made.

A. WHITNEY.

Witnesses GEO. WHITNEY, LEML. WgznLrAMs. 

